@protocol CAMetalDrawable; @interface CAMetalDisplayLinkUpdate : NSObject @property (readonly, nonatomic) id<CAMetalDrawable> drawable; @property (readonly, nonatomic) double targetTimestamp; @property (readonly, nonatomic) double targetPresentationTimestamp; + (id)updateWithDrawable:(id)a0 targetTimestamp:(double)a1 targetPresentationTimestamp:(double)a2; - (void)dealloc; @end